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(No Model.) 2 Shets--Sheet W. L. MONAIE.

GAS PRODUCER.

No. 370,273. Patented Sept. 20, 188.7.

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2 Sheets-Sheet 2. W. L. MGNAIR.

(No Model.)

GAS PRODUCER.

No. 370,273. Patenteqse t; 20, 1887.

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.UNTTED STATES PATENT OEETQE.

\VILLIAM LYON MONAIR, OF DENVER, COLORADO.

GAS-PRODUCER.

SPECIFICATION forming part of Letters Patent No. 370,273, datedSeptember 20, 1887.

Application filed March 1-2, 1887. Serial No. 230,711.

such as will enable others skilled in the art to which it pertains-tomake and use it, reference being had to the accompanying drawings, whichform part of this specification.

My invention relates to an improvement'in gas-producers; and it consistsin the combination and arrangement of parts, as will be more fullydescribed hereinafter, and set forth in the claims.

Figure 1 is a horizontal section of a gas-producer shown in connectionwith aboiler. Fig.

2 is a vertical longitudinal section taken at right angles to Fig. 1,and through two of the retorts. Fig. 3 is a detail View of the retortstaken at right angles to Fig. 2. Fig. 4. is aside elevation of a gasproducer.

A represents the retorts in which the coal is placed. to be distilled,and B the hearths,which are placed just below the retorts for thepurpose of supporting the fuel which is being used in the retorts.Theseretorts are preferably arranged in separate and distinct series, sothat they can be worked alternately without any connection with eachother and thus keep up a constant supply of gas. These retorts A areplaced vertically and are supported by means of the arches E,which arebuilt around them and extend from one side of the framework in whichthey are placed to the other. The two grates X are arranged in therelation shown to the two hearths B, and in order to prevent theproducts of combustion from passing from these grates X directly throughinto the flue O, a wall, J, is built from the rear edge of the rearhearth,so as to extend up from the under side of the retort A, and thusforce all of the products of combustion and the gas to pass toward thefront of the framework and then up and around the retorts A for thepurpose of heating them. Each grate X is provided with a slide, Y, whichcan be forced directly over the top of the grate-bars, so as to shut offall passage of air through the grate to the fire burning thereon. Theseslides are (No model.)

operated through the doors M, which are provided especially for thispurpose,and at the same time the registersL in the doors leading to theash-pits are to be closed.

Around the upper portion of each of the retorts A is formed a chamber,H, and leading from this chamber through the sides of the retorts are anumber of small openings, I. Steam is introduced into this chamber Hthrough a suitable pipe or pipes, Z, which steam becomes superheated inthe chamber H and then passes through the opening I into the retorts A,Where it. passes down through the coke in the retorts.

These pipes Z extend through the front wall of 1 the furnace and pass upthrough the openings Z made in the front end of the furnace,and upthrough which the products of combustion pass. Each one of the retortsis provided with a removable cover, F, through which the retort ischarged with fuel, and passing through these covers are the blast-pipesG, through which the air is allowed to pass when the retorts becomesufficiently heated to distill the volatile matter in the fuel, and theair-ports- L are closed and the slides Y are forced over the grates X.When the fuel in the retorts is burned to the desired depth, the air isturned on the second pair of retorts and the first pair are refilled.They are thus worked alternately. One pair reduces the coke and theother heats it preparatory to its reduction. Made through the frameworkare suitable air-'passages,W, through which air passes and becomesheated and then passes through the ports V into the flue O,where itmingles with the gas from the retorts.

Placed at the rear end of the flue is the steam boiler D, through whichthe heated products of combustion pass. Extending across the flue O is asuitable valve, L, for the purpose of regulating the heat in its passageto the boiler. The fuel in the retorts is converted into carbonic oxide,and then it passes around the retorts into the flue O,where it has mixedwith it a proper proportion of heated air from the ports V and burned to00 just before entering the boiler, thus giving out the maximum heat ofthe fuel.

By the construction shown and described the retorts are heated by thegases before they enter the chamber H. The airis admitted upon TOC ' thetop of the fuel, instead of below, as in the ordinary grate. The freshfuel is discharged in on top of the hot fuel in the retorts, thuscausing all steam formed from water in the coal to pass down through thecolumn of heated fuel, so as to insure its thorough decomposition, andslack or refuse coal which cannot be used in a grate can be used in theretorts.

The slide Y,which covers the grate under one of the cylinders, iswithdrawn, the fire is kindled, and the fuel isthen charged into thecylinder. The lower portion of the fuel being supported upon the hearthB,the blast is turned in through the pipe G,so as to supportcombustion,and at the same time steam is turned into the top of thecylinder through the pipe Z. This steam becomes superheated in thechamber H, and as it passes through the fuel all of the products ofcombustion pass forward toward the front end of the frame-work,becausethe wall J prevents any'backward passage of them toward the stack. Incausing the products of combustion to pass forward they are made to passaround the sides of the cylinders, so as to thoroughly heat them andthus decompose the fuel. After one set of cylinders have been used, theslide can be pushed inward over the tops of their grates, so as to shutoff all further combustion, and then a new pair of cylinders is broughtinto use. By operating the two pairs of cylinders alternately a constantand steady supply of gas is kept up.

Having thus described my invention, I claim- 1. The combination of thevertical chambers arranged in pairs, the hearths B, located under thecylinders, the grates located side by side with the hearths, the archeswhich support the cylinders in position, and the wall J, which is builtback of each heartlnsoas to prevent any passage backward of the productsof combustion.

2. The combination of the vertical cylinders A,provided with a series ofopenings,I,at their upper ends, a steam-chamber placed around the upperends of the cylinders, the pipes Z, through which steam is introducedinto the steam-chamber, the hearths B and grates X, located under thecylinders, the vertical wall J, which prevents the products ofcombustion from passing backward into the flue, and the arches E, whichsupport the cylinders in position, substantially as described.

3. The combination of the vertical cylinders A, the hearths B, thegrates X, located under the cylinders, the arches E, which support thecylinders in position, the vertical wall J, the flue G, and the slidesY, which are forced in over the grates, substantially as set forth.

4. The combination of the frame-work provided with air-passages W, whichextend horizontally backward, and the ports V, which open from theair-passage into the flue O,'wit-h the vertical retorts A, the arches E,which support the retorts in position, the hearths B and grates X,located below the retorts, and vertical wall J, located back of thegrates, sub stantially as specified. a

In testimony whereof Iaffix my signature in presence of two witnesses.

WILLIAM LYON MONAIR.

Witnesses:

JOHN T. WESTBER, WALTER WILsoN.

